ITV's epic crime drama will have viewers 'hooked in minutes'


John Simm stars in ITV's eight-part conspiracy thriller, which first aired in 2018 and is now available to stream on ITVX


Nicky Morris
Nicky MorrisActing TV and Film Editor
March 31, 2026
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Crime drama fans, listen up! The gripping series, Strangers, is now available to binge-watch on ITVX – and it sounds brilliant. 

The eight-part conspiracy thriller, which first aired on ITV in 2018 and was originally titled White Dragon, has been added to ITVX's 'Fresh In' collection.

John Simm in Strangers© Alamy Stock Photo
John Simm stars in Strangers

John Simm leads the cast as Professor Jonah Mulray, who is devastated when he finds out his wife has been killed in a car crash in Hong Kong. After making a shocking discovery, Jonah is determined to uncover the truth about her death. 

You know you're in safe hands when John Simm is on the screen. The Doctor Who actor clearly knows a good script when he sees one, having starred in acclaimed dramas such as Grace and Life on Mars

Plus, the series is penned by Mark Denton and Jonny Stockwood, who both have writing credits on Apple TV's award-winning thriller, Slow Horses, while Paul Andrew Williams (Broadchurch) directed the show. 

Keep reading to find out more…

What is Strangers about?

The story follows Professor Jonah Mulray, whose world is turned upside down when his wife, Megan, is killed in a car crash in Hong Kong. 

Although Megan lived and worked there for half the year, Jonah has never visited. His fear of flying has kept him in London, where he lives a sheltered life. Now, he must venture across the ocean to identify her body. But once he arrives, Jonah makes a shocking discovery about his wife. 

John Simm in Strangers© Alamy Stock Photo
The eight-part conspiracy thriller follows Professor Jonah Mulray, who makes a shocking discovery after his wife's death

A synopsis continues: "Over the course of eight thrilling hours, Jonah is drawn deeper and deeper into a web of conspiracy as he comes to terms with this utterly alien and unfamiliar environment, battling to uncover the truth about his wife's death."

What have viewers said about the show? 

While some viewers thought the pacing was a little slow, others binge-watched the show and hailed it as "captivating" and "epic".

One person described the series as "an unexpected gem," while another said they were "hooked in the first five minutes". 

John Simm and Katie Leung in Strangers© Alamy Stock Photo
The series is available to stream on ITVX

A third fan commented on the "surprising twists and turns". 

Who stars in Strangers? 

John Simm stars as Jonah, while Dervla Kirwan (Smother, House of Guinness) plays his wife, Megan. 

Meanwhile, Emilia Fox (Silent Witness) plays Sally, a British consulate official helping Jonah. 

Emilia Fox smiles in peachy floral dress© Getty
Emilia Fox also stars in the show

Rounding out the cast are Anthony Wong (Still Human), Tim McInnerny (Bookish), Anthony Hayes (Paradise Beach), Raquel Cassidy (Downton Abbey) and Katie Leung (Bridgerton).

What have critics said about the show? 

The series was met with mostly positive reviews from TV critics. 

In its three-star review, The Guardian highlighted John Simm's impressive performance in the "intriguing" thriller.

The Telegraph and The Independent also handed out three stars, with the latter describing the series as a "glossy thriller with lofty ambitions". 

Strangers is available to stream on ITVX now.

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